class Parent(object):
    def altered(self):
        print("PARENT altered()")
class Child(Parent):
    def altered(self):
        print("CHILD,BEFORE PARENT alterred()")
        super(Child,self).altered()
        print("CHILD,AFTER PARENT altered()")

dad=Parent()
son=Child()

dad.altered()
son.altered()
input()
      
